Berkeley Nucleonics' Model 835-6-R is a 19&rsquo&rsquo 1U rackmount, very low phase noise, fast-switching RF signal generator with µ-Hz frequency resolution, and precisely leveled power range from -120 to +13+ dBm. It combines excellent signal quality, high-quality analog modulation and fast switching capabilities. Flexible and simultaneous modulation allows complex signal simulation. The internal OCXO guarantees a high stability time base and can be locked to an external reference in the range of 1 to 250 MHz. The modular design simplifies maintenance and minimizes cost of ownership.